CVE-2026-77584
HIGH
7,0
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: high
Availability: low
Description
AI Translation Available
Tor before 0.4.9.10 did not reject a CONFLUX_LINK cell that arrives on a circuit which already has attached streams. A malicious client could send a RELAY_COMMAND_BEGIN before the CONFLUX_LINK on the same circuit, attaching an exit stream that would later end up orphan leaving a dangling circuit back-pointer and a use-after-free (UAF) when the circuit is freed. This is TROVE-2026-025.
821
Incorrect Synchronization
IncompleteCommon Consequences
Security Scopes Affected:
Integrity
Confidentiality
Other
Potential Impacts:
Modify Application Data
Read Application Data
Alter Execution Logic
Applicable Platforms
All platforms may be affected
https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.10/ChangeLog